1. Write and test the following function: def file_head(fh, linecount) : OUTAWNY Prints first linecount lines of fh. Line numbering starts at 0. If length of file is shorter than linecount, stops printing after last line of file. Use: file_head(fh, linecount) 9 Parameters : 10 fh - file to process (file handle - open for reading) 11 linecount - number of lines to print (int > 0) 12 Returns : 13 None 14 15 Add the function to a PyDev module named functions . py . Test it from to1 . py. The function does not ask for input - that is done by your test program. Test the function with any py file. Sample execution: fh = open("functions. py", "r", encoding="utf-8") file_head(fh, 5) Assignment 9 Functions Author : David Brown2. Write and test the following function: def file_integers(fh) : WNP Extracts positive integers from a file into a list of integers. OUT A Numbers are comma-delimited. Non-numeric tokens are ignored. Use: numbers = file_integers(fh) Parameters : 9 fh - file to process ( (file handle - open for reading) 10 Returns : 11 numbers - a list of integers from fh (list of int) 12 13 Add the function to a PyDev module named functions . py . Test it from t02. py. The function does not ask for input and does no printing - that is done by your test program. Sample execution: fh = open("numbers. txt", "r", encoding="utf-8") NP file_integers(fh) [10, 20, 30, 40, 50, 60, 90, 80, 70, 11, 22, 13, 14, 14, 20] Test the function with numbers.txt.3. Write and test the following function: def file_stats(fh) : VOUTAWNY Evaluates the contents of a file. Use: ucount, Icount, dcount, wcount = file_stats(fh) Parameters : fh - file to process (file handle - open for reading) Returns : ucount - The number of uppercase letters in the file (int) Icount - The number of lowercase letters in the file (int) WNES dcount - The number of digits in the file (int) wcount - The number of whitespace characters in the file (int) 14 15 Add the function to a PyDev module named functions . py . Test it from t03. py. The function does not ask for input and does no printing - that is done by your test program. Sample execution: fh = open("functions.py", "r", encoding="utf-8") file_stats(fh) (52, 2304, 44, 1512) Test the function with addresses.txt.4. Write and test the following function: 1 def flattenCmatrix): 2 """ 3 _______________________________________________________ 4 Flatten the contents of ZD list matrix. A 'flattened' list is a 5 2D list that is converted into a 1D list by rows. 6 matrix must be unchanged. 7 Use: flat = matrix_flatten(matrix): g _______________________________________________________ 9 Parameters: 10 matrix a 2D list (ZD list of int) 11 Returns: 12 flat - the flattened version of matrix (list of int) 13 14 """ Add the function to a PyDev module named functions . py. Test it from t04 . py. The function does not ask for input and does no printing - that is done by your test program. Sample execution: 1 | flatten([[1, 2, 9], [3, 7, 12], [4, 2, 01]) _____________________________________ 'I i [1: 2: 9: 3: 7r 12: 4r 2r 0]: _____________________________________ J Test the function with three different sets of parameters. 5. Write and test the following function: 1 def matrix_rotate_right(matrix): 2 """ 3 _______________________________________________________ 4 Returns a copy of a 20 matrix rotated to the right. 5 a must be unchanged. 6 Use: rotated = matrix_rotate_rightCmatrix) 7 _______________________________________________________ 8 Parameters: 9 matrix a 20 list of values (2d list of int/float) 10 Returns: 11 rotated the rotated version of matrix (ZD list of int/float) 12 13 """ Add the function to a PyDev module named functions . py. Test it from t85 . py. The function does not ask for input and does no printing - that is done by your test program. Sample execution: 1 | matrix.rotate_right([[1, 2, 9, 3], [7, 12, 4, 21]) r ____________________________________________ 'I EH7. 1], [12. 21. [4. 91. [2. 8115 I. ____________________________________________ J Displayed in a formatted way: IIEE IIEE is rotated to: Test the function with three different sets of parameters. Bonus Task Write and test the following function: def get_addresses(fh) : OUTAWNY Reads a addresses from fh into a list of addresses. Addresses are stored in fh in the form: name street city postal code 10 11 Each address in the list of addresses is a list of the form: 12 [name, street, city, postal code] 13 Use: addresses = get_addresses(fh) 14 15 Parameters : 16 fh - file to process (file handle - open for reading) 17 Returns : 18 addresses - the addresses from fh (list of str) 19 20 Add the function to a PyDev module named functions . py . Test it from t06. py. The function does not ask for input and does no printing - that is done by your test program. Sample execution (output formatted for readability): 1 fh = open("addresses. txt", "r", encoding="utf-8") N get_addresses(fh) 'David Brown' , 'King St', 'Waterloo, ON' , 'Q10 101'], 'Tasmin Brown' , 'Awesome Avenue' , 'Waterloo, ON' , 'UIF 5D4' ] Test the function with addresses.txt. This task is worth bonus marks